15.0k views
2 votes
Simplify the expression-
4+ -9r–1

User Guy Luz
by
6.8k points

2 Answers

5 votes

Answer: -9r+3

Explanation:

In order to simplify this expression, all you have to do is combine the like terms. However, because there is an addition and a subtraction sign next to each other, we have to multiply them together to find which sign will stay.

Positive x Positive = Positive

Positive x Negative = Negative <---

Negative x Negative = Positive

Because we know that multiplying a negative sign by a positive sign will give us negative, we have to keep the subtraction sign and remove the addition sign. This leaves us with 4-9r-1. All that is left to do is simplify.

Combine the like terms: 4-1 = 3

Answer: -9r+3

Hope this helps!

User Wpgreenway
by
7.3k points
5 votes

Answer:

-9r + 3.

Explanation:

Group Like Terms:

A: -9r + 4 - 1,

Add/Subtract numbers:

A: -9r + 3.

If you have any questions feel free to comment below.

Best of Luck to you.

User Igniter
by
6.4k points
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